it is either okay to use or it is not okay to use. jenna: what do you think is best. >> i'm sorry, what do i think is best? jenna: yeah. >> i don't care. you talk about all people. there are many people that use hgh, find it as an unbelieveable, it is unbelievable drug to make them more youthful, more vibrant, stronger, heal your body. i think that a lot of players in the nfl do it not because it is a performance-enhancing drug. it keeps you healthier. it promotes for you to get better faster. jenna: i'm sorry to interrupt, greg. i'm curious because we've done so many stories on the news and you've been on to talk with us about concussions. >> sure. jenna: a lot of talk about players getting bigger, faster, stronger even at aing young age and that could contribute some say to the tough injuries we're seeing including the rise in concussions. do you have any concern about that? >> no. actually, players are training, there are different methods of training. there is more specific methods to train what your sport is but it's not that the